“So is leaving the Rio and being back in under 90 min even feasible?”

Yes. Krung Thai on Decatur is a solid place, I’ve been there three times on WSOP dinner breaks and always made it back with plenty of time to spare (often back at Rio with half hour left on clock). Quick and good food, friendly staff. and they’ll make just about any of their dishes with tofu instead of meat if you ask.

I also like Mt. Everest indian food though it’s a bit further away on Sahara. Not quite as quick either, could be pushing it on the dinner break but if you are with someone who isn’t playing they can drop you off and then park.

All American Dave is the best value you will find in the Rio, not cheap but at least you get quality food.

Having access to some of your own food is great too. How long are you in town? I have a car and will probably make a Whole Foods run some time in the next few days.

Those hours are for a food cart somewhere else, he's at WSOP like 10 – 10 or something like that. You don't need a meal plan, and in fact unless you buy his stuff REALLY often they aren't worth getting. You can just place an order at the food truck outside by the bathrooms and either pick it up (takes 5 – 10 minutes to make) or have them deliver it to your seat.